MANCHESTER UNITED and Liverpool are on red alert as Marco Reus has turned down a new contract with Borussia Dortmund according to reports in Germany.

The 25-year-old attacking midfielder has been linked recently to both Premier League powerhouses with Liverpool thought to be weighing up a bid.

United have also been courting Mats Hummels but Dortmund boss Jurgen Klopp insisted neither were sale and he said last week: "I can assure everyone there are no indications that Mats or Marco want to leave.

"They will be playing for us in the new season.”

I can assure everyone there are no indications that Mats or Marco want to leave

Jurgen Klopp

German paper Bild claims Reus has turned down a new offer from Dortmund as his current contract expires in 2017.

Dortmund have been adamant in recent weeks that Reus is not for sale and he will be staying put this window.

Meanwhile, Shinji Kagawa has been linked with a return to his old club Dortmund after failing to shine at United.